Steel sash connection



M. ZEMAN May 1, 1923.-

STEEL SASH CONNECTION Filed July 23 1921 Patented May 1, 1923.1

UNITED STATES MATHEW ZEMAN, or CLEVELAND, onto.

'STEE'I sA sH coimEc-riofi.

' "Befit kn ownftliat '1, MAT EW itizen or fthe United states, residing it Clev'eIziiid, in "the count of ouyahega air d State of Ohio, have invented .certainfffietv ziidhfsefiil Improvements" in'St'eeT Sash Coir netio'ns, of'fwhih the following @is a speoifi'ation, eference biiig had to the ac compil i g' fi i This iii'vpti'on relates to iiietallic gash Qcon- Iietiohsfih'dfhds for its "object to provide a oori'fieotioi ftiherih th'ebe'is or railsofthe sash maybefiri'nly interlocked Without reqii iriligthe"oo iiieetion to be w'veldedor'the szi'sh' to be 63st inroii'ef pie ce. 4

It is "iiother object of the inir'eiition to provide 'a 'eiihheti'on of this Character Where:- in th'eiiieari's for locking the b'arsfor rails "of the s'ishi'n eii'gagei'rient 'With eah other'fis formed integral with or carried by each-fail.

It is another object "of the intention to provid'eeoii'riectioh of this" chelrajoter whereineach 's t ripor bar is provided with op'positely "ezitendi'ng right angular flanges, the fi'aliiges'of e'ich bar beirig adaptedt'oeiigage the flanges of'the adjacent bar whereb y oscillati'lig movement ofthe bars in their connected positions is prevented.

It is also 'an object "the iiiveiitio'n "to provide a connectionof this feha'rgieter "(gemp'ris'ing bars having slots, the end -iivalls of said slots beinga'dapte'd to "engag each other to hold theb'ars inihterloekiii'g rehitiom'eaoh bar adj'z centi the open ends of the slots being provided with means adapted -to look said bars in their interlocking relation by closmg the ends of the .slots.

It is a furtherobje'ct of'the invention to provide a sash oonne'etionof this character wherein the means for locking the bars in interlocking reletio'n serves to form econtinuation of e'ztch bar, and to eliminate the trace of a cohneotion and togive the appearance of a c'ast'eoririeotion.

'It is "still a further object of the invention to provide a connection of this character wherein the corinection they be constructed to lock thefbars at various angles with respect'to each other to'permitjthe formation ofivirious designs in s'asheonstruction, 7

With these and other objects in Vietvthe invention consists in the improved oo'nstriiotion and 'arran'gernent'of parts to b'e'herein- :ifter more particularly deseribed, fiilly Application i iled my '23, 1521. saw iiof ivloi'z.

- thebar so a's to render the bar substantial.

or in other words, every other slot is dis,

posed in the opposite longitudinal edge of In assemblingthe sash, the bars are so positioned that the slots are disposed in confronting relation. The slotted'portions of the bars are then moved toward each other so that the portions of the bars adjacent the end walls of the slots are received into the slots, movement of the bars laterally of each other being limited'by contact of the end walls of the slots with each other. By this means, one of the bars is disposed at right angles to the adjacent bar by means of which the window pane frames are formed. It will be noted that the end walls of the slots are disposed substantially in the plane of the faces 8 and 12'of the flanges 7 and 11 so that when the end walls come in contact with each'other the V-shaped recesses will receive thebeveled ends of the flanges 7 and 11. By this means, the beveled and concave faces 9 v and 13 of the flanges substantially register so that an unbroken channel or design is provided in the window pane frame. Furthermore, the beveled ends of the flanges formed by the V-shaped recesses are adapted to engage the beveled ends of the adjacent flangesand in this way serve as braces to prevent oscillating movement of the bars.

The edge of each bar remote from the extensions 18 and 19 and immediately beneath the end walls of the slots is provided with a pair of concave recesses 20. These recesses are adapted to be disposed immediately beneath the extensions when the bars 5 are disposed in interlocking relation. After the bars have been positioned as above described, the fingers or extensions 18 and. 19 are forced toward each other and into the recesses 20, considerable pressure or force being applied to said extensions so that they are forced into frictional engagement with each other and substantially form a continuation of the broken edge of the bar caused by the slots so that the connection is not visible. Furthermore, the extensions also serve to close the open ends of the slots so that movement in either direction of either bar is impossible, and oscillating movement is prevented by the flanges 7 and 11.

As disclosed in Figures 5 and 6, the bars maybe disposed in interlocking relationat various angles. This is possible by provlding a slot 16 which extends obliquely of the I gardless of the angle of the slots and flanges,

each bar is provided with the usual extensions for locking the bars in interlocking relation.

From the foregoing it will be readily seen that this invention provides a novel connection particularly adapted for steel sash construction, wherein the bars of the sash may beconnected without casting or without requiring screws or separate fastening means. Another important feature is that the means for holding the bars locked in their interlocking relation is carried by each bar and cannot be unlocked unless the bar is mutilated. Furthermore, the construction of all the bars is exactly the same, regardless of the fact that they are intended to interlock and one bar is disposed at right angles to the other.

What is claimed is z- 7 1. A joint of the character described comprising a pair of strips, one of said strips having a slot extending inwardly from its front longitudinal edge, another of said strips having a slot extending inwardly from its rear longitudinal edge, the rear longitudinal edge of the first mentioned strip and the front longitudinal edge of the second mentioned strip having small recesses, the front longitudinal edge of the first mentioned strip and the rear longitudinal edge of the second mentioned strip having extensions extending therefrom adjacent the slot of each strip, said slots permitting interengagenient of the strips with each other whereby the extensions project respectively beyond the front longitudinal edge of the second mentioned strip and the rear longitudinal edge of the first mentioned strip, the extensions being adapted to be forced into the recess of the adjacent strip.

2. A joint of the character described comprising a plurality of strips, one of said strips having a slot extending inwardly from its front longitudinal edge, another of said strips having a slot extending inwardly from its rear longitudinal edge, the rear longitudinal edge of the first mentioned strip and the front longitudinal edge of the second mentioned strip having small recesses'disposed substantially in alignment with the inner walls of the slots of the strips, the front longitudinal edge of the first mentioned strip and rear longitudinal edge of I the second mentioned strip having extensions extending therefrom. on each side of the slot of the strip, each extension having one face thereof disposed flush with the ad: jacent inner wall of the slot and substan-.

tially forming a continuation of the" side walls of the slot, said slotbeing adapted to permit interengagement of the strips with each other whereby the extensions ofthe first mentioned strip project beyond the front longitudinal edge of the" second men tioned strip, and the extensions *of the sec adapted to' extend toward each other and into the recess'of the adjacent strip whereby i the extensions (if-each strips'ubstantially coact with the slot to provide a socket for the p In 2Q In testimony whereof I hereunto afiix my i adjacent strip.

signature;

, MATHEW M'AN' longitudinaledge of the first mentioned strip, the extensions of each strip being 15[j a ,1 I 

